<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #zxy {
            color: green
        }

        .c1 {
            color: blue
        }

        h1, h2 {
            background-color: yellow
        }

        input[type='submit'] {
            background-color: red
        }

        input[type='button'] {
            color: pink
        }

        * {
            border: 1px solid red;
        }
    </style>
</head>
<body>
<ul>
    <li id="zxy">张学友</li>
    <li class="c1">刘德华</li>
    <li>郭富城</li>
</ul>
<h1 class="c1">悟空</h1>
<h1>八戒</h1>
<h1>唐僧</h1>
<h2>刘备</h2>
<input type="submit">
<input type="button" value="按钮">

</body>
</html>
